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An exploded view of various Muir anchor winch and windlass spare parts, including gears, shafts, and casings.

SHAFT ASSEMBLY HR4000 THOR SG/SC

Shaft Assembly HR4000 Thor SG SC | Genuine Marine | Muir AU

The Muir Shaft Assembly HR4000 Thor SG SC is a genuine factory replacement designed specifically for HR4000 Thor horizontal windlasses with SG SC configuration. Precision-engineered to exact OEM specifications, this complete unit forms the rotational core of your windlass — transmitting torque from the motor to the gypsy and capstan for reliable, smooth, and powerful anchor handling.

Built for Marine Conditions

Manufactured from marine-grade materials and finished for outstanding corrosion resistance, the drive shaft withstands saltwater, UV exposure, and harsh offshore environments. Every shaft is machined to precise tolerances, ensuring perfect alignment with bearings, seals, gypsy, and capstan for whisper-smooth operation and minimal wear over years of demanding service.

Key Features

  • Genuine Muir replacement core component
  • Designed specifically for HR4000 Thor SG SC windlasses
  • Precision-machined to exact OEM tolerances
  • Marine-grade construction for corrosion resistance
  • Complete unit — ready for direct installation
  • Built to Muir's strict engineering standards

Why Choose Genuine Muir Parts?

Choosing the authentic Shaft Assembly HR4000 Thor ensures perfect alignment, optimal load capacity, and long-term reliability. Aftermarket alternatives often use inferior materials with looser tolerances that cause vibration, accelerated bearing wear, and premature windlass failure. Trust genuine Muir parts for dependable performance and full warranty support.

Order your replacement shaft today from Muir Australia — trusted marine engineering since 1968.

Part number: K061080

Fits: HR4000 Thor exploded view

Prices aren’t shown online. Send us the part number and your windlass model and serial number and we’ll confirm fit, price and availability.